Effect of temperature and pressure on excess electron mobility in n-hexane, 2,2,4-trimethylpentane, and tetramethylsilane

Journal Article · Thu May 15 04:00:00 EDT 1986 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.449890· OSTI ID:5883809

Munoz, R C; Holroyd, R A

Measurements of excess electron mobility are reported for liquid n-hexane, 2,2,4-trimethylpentane, and tetramethylsilane for pressures from 1 to 2500 bar and for temperatures from 18 to 120 /sup 0/C. For tetramethylsilane, a liquid that exhibits a high electron mobility, the mobility at constant density is proportional to T/sup -0.9/ between 25 and 100 /sup 0/C. The results are compared with the Basak--Cohen deformation potential theory. For n-hexane, where the mobility is low, Arrhenius behavior is observed. The isochoric activation energy increases with density. The results in this case are consistent with both the two-state and hopping models. In 2,2,4-trimethylpentane the mobility increases with increasing pressure at room temperature and decreases at high temperature. At 2500 bar and at intermediate temperatures (70--80 /sup 0/C) the mobility is approximately constant.

• Research Organization: Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 5883809
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 84:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ELECTRON MOBILITY
FLUIDS
HEXANE
HIGH PRESSURE
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
LIQUIDS
MOBILITY
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PARTICLE MOBILITY
PRESSURE DEPENDENCE
SILANES
SILICON COMPOUNDS
TEMPERATURE DEPENDENCE